EX-21.1 4 a2202106zex-21_1.htm EX-21.1
QuickLinks -- Click here to rapidly navigate through this document


EXHIBIT 21.1

Name
  Percent of Capital
Stock/Equity Units
Owned by
Steel Dynamics, Inc. 		  Percent of Voting
Stock/Voting Units
Owned by
Steel Dynamics, Inc. 		 

Dynamic Aviation, LLC (Indiana)

     100 %   100 %

New Millennium Building Systems, LLC (Indiana)

     100 %   100 %

OmniSource Corporation (Indiana)

     100 %   100 %

Paragon Steel Enterprises, LLC (Indiana)

     50 %   50 %

Roanoke Electric Steel Corporation (Indiana)

     100 %   100 %

Shredded Products II, LLC (Virginia)

     100 %   100 %

Steel Dynamics Sales North America, Inc. (Indiana)

     100 %   100 %

STLD Holdings, Inc. (Indiana)

     100 %   100 %

The Techs Industries, Inc. (Pennsylvania)

     100 %   100 %



QuickLinks